soSIMPLE Calendar works on the iPad and WebDirect with drag and drop & resizing. We also have dedicated templates for the iPhone. Please take a look at our online demos at:
Let me know if you have any questions we can answer.
I've tried several calendar products and I'm a fan of soSIMPLE and of Ken d'Oronzio who develops it. Easier to integrate with your database than other products I've tried. And very powerful.
I've used SoSimple Calendar and found Ken to be very easy to work with. I've no problems recommending his product.
if I would have to choose, it would be Seedcode. I'm really impressed by this technique. Maybe the fastest Calendar I've seen yet.
Second that, integrating SeedCode DayBack now - very exciting what you can do with it